Answer:
The (-3x-9)=27 and (-5x-2)=10
Step-by-step explanation:
Step-by-step explanation:
Distance = speed x time = 60 x 12 = 720 km. Speed = 72 km / h
R + b = 21
2b = r
now we sub eq 2 into eq 1
r + b = 21
2b + b = 21
3b = 21
b = 21/3
b = 7
2b = r
2(7) = r
14 = r
so there are 7 bluejays (b) and 14 robins (r)...for a total of 21
no not until u know the price of a cd u cant determine the total price
Answer:
Option B. 
Step-by-step explanation:
we know that
The frequency is equal to the number of cycles divided by the time
Remember that
1 cycle = 1 full wave to repeat itself
In this problem
From o to 12 seconds ------> there are 2 cycles
therefore
The frequency is equal to
